[关键词]
[摘要]
轨道交通客流的日益增长使乘客在网络上的出行可达性受到影响,当轨道交通处于客流饱和时乘客存在无法上车而被迫留乘的可能性。为分析轨道交通网络可达性的动态变化特征,建立考虑客流饱和条件下的轨道交通网络动态可达性的评价模型;模型以轨道交通网络拓扑结果作为可达性的空间特性,以列车运行计划作为其时间特性。在深圳轨道交通网络上进行案例分析,通过网络客流和列车运行计划,得到乘客在网络上的期望旅行时间,继而得到OD对及车站的可达性指标。结果表明,目前的轨道交通网络中客流需求更大的车站往往配备较好的列车运输能力,以提高可达性,但是受限于列车开行间隔,客流饱和条件下的部分热门车站动态可达性较低。提出可达性评价方法,可用于评价网络中的客流需求与列车运行计划的匹配程度。
[Key word]
[Abstract]
The increasing passenger demand for urban rail transit affects the accessibility of passengers on the network. When the network is under an oversaturated condition, passengers may be forced to ride the oncoming train due to train capacity, leading to dynamic network accessibility. To solve this problem, an evaluation model considering passenger flow saturation is established. The model takes the topological network as the spatial characteristic of accessibility and the train schedule as its temporal characteristics. The Shenzhen metro network is considered as a case study to demonstrate the effectiveness of the proposed method. The expected travel time on the network is calculated using the passenger flow and train schedule and the Origin- Destination (OD) pairs and station accessibility index are then obtained. The results show that the stations with larger passenger demand in the rail transit network are often equipped with better train transport capacity to achieve better accessibility but, due to the constraints of train headways, some stations with saturated passenger flow have lower dynamic accessibility. The proposed method can be used to evaluate the degree of similarity between passenger demand and the train schedule in the network.
[中图分类号]
U231+.92
[基金项目]
广东省自然科学基金项目(2018A030313119)